What is Rotary and Evaporation

In former article, we have introduced a lot about the rotary evaporator, including the working principle, sorts and application in kitchen. Rotary evaporator is common instrument in laboratory, it consists of motor, distillation bottle, heating pot and condenser, it is widely used in the fields of chemistry, medicine, bioengineering, etc. Today I will introduce what is rotary evaporation, and it’s advantages and disadvantages.

rotary evaporator

Working principle of rotary evaporator:

Rotary evaporator is controlled by the motor so that to make the rotary flask keep rotating and to enlarge the evaporation in rotary flask. Rotary evaporation is mainly used for separation and condensation of solid reagents. The working principle is: put the sample in the bottom of rotary flask, then heating by water bath or oil bath. The rotary flask will keep rotating under the power of motor when heating. In this case, the solvent can spread the whole flask, so that to prompt the evaporation area and speed.

Working principle of rotary evaporator

Advantages of rotary evaporation:

Rotary evaporation removes solutes and solvents at relatively low temperatures. Rotary evaporation is mainly used to collect solutes, the purpose of collecting solution is for recycling and reducing pollution. In addition, rotary evaporation is heated by a water bath or a oil bath. For liquids that are not easy to boil, rotary evaporation can be further operated under boiling conditions. Conversely, for liquids in boiling, rotary evaporation can control its temperature and pressure to near or below the boiling point to ensure it evaporation. Generally speaking, rotary evaporation can greatly reduce the time of experimentation compared to vapour evaporation. Usually, rotary evaporation can be completed in just a few minutes, and the longest time is no more than half an hour. Conversely, the vapor evaporation need about one hour.

Advantages of rotary evaporation

Shortage of rotary evaporation:

But, If the sample is complicated, for example, the sample is a food or an environmental sample, bubbles will appear during the rotary evaporation, and a large amount of impurities will remain.

Rotary evaporation is a process that uses the different boiling points of the solute to separate, and it can separate all the components after condensation. In addition, the vacuum degree is also an important factor affecting the effect of rotary evaporation. Rotary evaporation can separate based on the difference boiling point between solid and liquid, but in this process, the separated solute is not pure

Above is the brief introduction of rotary evaporator, I systematically answered what is rotary evaporation, mainly introduced from working principle, the advantage and disadvantage of rotary evaporator. If you want to know more about rotary evaporator, please contact Henan Lanphan industry Co.,Ltc. We own very good reputation at home and abroad, our product is superior in quality and competitive in price. We have engaged in manufacturing of laboratory equipment and pipelines, if you are interested to buy, welcome to contact with [email protected]